Compressive Resistance f’c=210 Kg/cm2 with the Replacement of Cement in 9%, 11% and 22% with Ground Glass (#922)

Authors

Pastor Ravines, Alex Paul

Aguilar Aliaga, Orlando

Abstract

The main purpose of the present investigation was to analyze the axial compression resistance of a concrete F'c = 210 Kg/cm2 incorporating glass as an ecological material and determine the appropriate percentage as evaluated. To achieve this, a partial replacement of the cement was carried out with the following percentages (9%, 11% and 22%) of ground glass, in order to compare conventional or standard concrete with an ecological concrete explained above. The study began with the analysis of the physical-mechanical properties of the coarse and fine aggregates, which concluded with the determination of their granulometry, unit weight, moisture content, specific weight and their absorption. Based on the data from the aggregate tests, the concrete mix was designed according to the cement replacement percentages, in which a slump of 3-4” (inches) was used to guarantee adequate workability of the material. . Subsequently, a total of 72 6” x 12” cylindrical tests or witnesses were prepared between conventional concrete and the replacement of the three mentioned percentages. The objective was to determine what was the optimal replacement percentage for ground glass for a f'c = 210 Kg/cm2. The concrete core breakage tests were carried out 7, 14 and 28 days after entering the curing pond. The appropriate percentage for the mix design resulted in 11% cement replacement since at the age of 28 days of curing, 312.64 kg/cm2 was recorded, which means an increase in resistance of 48.88%.